package com.heima.behavior.service.impl;

import com.heima.behavior.service.ApBehaviorEntryService;
import com.heima.behavior.service.ApLikesBehaviorService;
import com.heima.common.exception.CustException;
import com.heima.model.behavior.dtos.LikesBehaviorDTO;
import com.heima.model.behavior.pojos.ApBehaviorEntry;
import com.heima.model.behavior.pojos.ApLikesBehavior;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.threadlocal.AppThreadLocalUtils;
import com.heima.model.user.pojos.ApUser;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.data.mongodb.core.query.Update;
import org.springframework.stereotype.Service;

import java.util.Date;

@Service
public class ApLikesBehaviorServiceImpl implements ApLikesBehaviorService {

    @Autowired
    private ApBehaviorEntryService apBehaviorEntryService;
    @Autowired
    private MongoTemplate mongoTemplate;

    /**
     * 用户点赞行为
     * @param dto
     * @return
     */
    @Override
    public ResponseResult like(LikesBehaviorDTO dto) {
        // 1. 校验参数
        ApUser user = AppThreadLocalUtils.getUser();
        if (user == null){
            CustException.cust(AppHttpCodeEnum.NEED_LOGIN,"用户未登录");
        }
        // 2. 根据当前登录用户id查询行为实体对象
        ApBehaviorEntry apBehaviorEntry = apBehaviorEntryService.findByUserIdOrEquipmentId(user.getId(), dto.getEquipmentId());
        if (!apBehaviorEntry.isUser()) {
            CustException.cust(AppHttpCodeEnum.DATA_NOT_ALLOW,"需要登录才能点赞");
        }
        // 3. 如果是点赞操作  判断是否已经点过赞
        Query query = new Query(Criteria.where("entryId").is(apBehaviorEntry.getId()).and("articleId").is(dto.getArticleId()));
        ApLikesBehavior apLikesBehavior = mongoTemplate.findOne(query, ApLikesBehavior.class);
        if (dto.getOperation() == 0) {
            if (apLikesBehavior != null){
                //已经点过赞
                CustException.cust(AppHttpCodeEnum.DATA_NOT_ALLOW,"您已对该文章点过赞，无需重复点赞");
            }else {
                // 4. 没有点过赞则 像mongo点赞集合中 添加点赞数据
                apLikesBehavior = new ApLikesBehavior();
                apLikesBehavior.setEntryId(apBehaviorEntry.getId());
                apLikesBehavior.setArticleId(dto.getArticleId());
                apLikesBehavior.setCreatedTime(new Date());
                mongoTemplate.save(apLikesBehavior);
            }
        }else {
            // 5. 如果是取消点赞操作  在mongo点赞集合中 删除对应点赞数据
            if (apLikesBehavior == null) {
                CustException.cust(AppHttpCodeEnum.DATA_NOT_ALLOW,"您没有给该文章点过赞，取消失败");
            }
            mongoTemplate.remove(apLikesBehavior);
        }
        return ResponseResult.okResult();
    }
}
